Jacob diokerson



".PETERS, HOTO-LITHOGRAPNER, WASHINGTON, D` C JAooB DicKERsoN, or SACRAMENTO, oALmoRNiA.

WINDMILL.

Specication of Letters PatentNo. 26,345, dated December@ `1859.

To all whom it may concern: i

Be it known that I, JACOB DIoKERsoN, of the city and county of Sacramento and State of California, have invented a new and useful Improvement in Windmills; and I do hereby declare that the following is a full, clear, and eXact description of the same, reference being had to the accompanying drawings, forming a part of this specification, in Which- 3 Figure l, represents a perspective view o my improved Wind mill, and Fig. 2, a view of the Wind wheel in a horizontal position, detached from the shaft. i

Similar letters of reference in each of the several figures indicate corresponding parts.

My invention relates to that character of wind mill which has its sails regulated by the centrifugal force resulting from the revolution of the wheel, and the improvement which I have made lessens the cost of coni struction and brings the parts of such wind mills more compactly together.

To enable others skilled in the art, to make and use my invention, I will proceed to .describe its construction and operation.

A, represents the rim of the wheel, into which the outer end of the fan shaped wings or sails B, `are fastened by an iron bolt C, the inner end being fastened in a similar manner to the periphery of the hub, so as to allow them to turn as may be required. This hub is formed by pieces of plank tting into the angles formed by the crossing of the arms D. To these arms, are attached the slides E, secured to the arms by iron bands F, in such manner as to allow the slides to move back and forth upon the arms. It will be seen the wheel is thus divided into four quarters by the arms. In each space between the arms are siX wings or sails. Six of these sails, three upon each side of each arm, are connected by a thin curved plate of iron E1L at the inner end and near the inside edge of the sails, by a small bolt passing loosely through the iron so as to allow the sails to turn. These siX sails thus securely fastened together are further connected by a rod G, passing from the slide E, to the controlling of the sails to each slide. ,i

To the shaft ofthe wind` wheel,is' at- ,f tached the inner end of a springfI-I, similar to the main-spring of a watch. The spring H is inclosed in, and, theHouterend"fastened,tog155`` the inside of a cylinder I,turning"fupon the i shaft to which the spring is attached.' `This spring is connected with the slides l'*},fE,fb`yl c, u means of rods J, J ,jpassng from the slides j to near thecylindenWwhere they arecon`` 601` nected to leather strapsor cords, each oft-he,"

straps or cords passing about one-fourthof;`

the circumference aroundthe cylindenfand i then attaching thereto. U

The red lines in Fig.f2, represent'thesails when the largest'surface is presented to `the c wind and the blaclrllines fparallel tothem,

when the least amount `o i surface ispre` sented. The effect ofthis combination, will` i readily be perceived.1 The `Sprnor holdsthe 7o slides to the nearest place to the srhaft of the" wind wheel to which they "are designedfto" come and then thesails present the largest amount of surfaceto the wind. In case of a strong gale by which the velocity of the" wheel would be too; great, the centrifugal :1

force thus brought into action forces out the` slides from the center'and thusturnsthe sails `so as to present less surface, and consequently less resistance to the wind, thereby `avoiding the danger of too great force upon i the sails and consequent damageto machini ery being driven. i the force of the wind i c current abates, thespring drawsthe` slides back nearer the center and" consequently turning the sailsso `as to again present La` i `f l larger surface to thefwind."`

What I claim as m llnventionfanddeslre to secure by Letters Patent, is`-` The arrangementgof he curved iron sec-f* tions E', sails B,`arms D, slides E, hollow drum I, scroll spring II,iiexible connecting x sail next the thus connecting one fourth i 

